KOTA KINABALU, July 24 -- Sabah has petitioned the federal government to require all companies operating within the state to separately declare revenue earned in Sabah, a move aimed at bolstering transparency in the negotiations over its constitutional 40 per cent revenue entitlement.

Sabah Finance Minister Datuk Seri Masidi Manjun said yesterday that the state government wrote to the Ministry of Finance in February and March this year.

"In those letters, among other things, we stressed the need for an official ruling to determine the method for declaring revenue and taxes by Sabah companies, as well as non-Sabah companies with operations in Sabah whose revenue is declared outside Sabah," Masidi said.

Masidi explained that such a rulin...